Can you point to an example of what you're trying to do? I know what "bleed" is and I know what "crop marks" are, but I am not sure I understand what "bleed lines" are. Is that the same thing as a crop mark? Maybe that will also help me to understand what being circular has to do with them. I just don't think I understand specifically what you're referring to.
I will be using Panda Games for manufacturing, and here is some info from their page regarding their requirements..
"All bleed areas are consistent. If there is a 3mm bleed on the left side, ensure there is also a 3mm bleed on the right side. Any files requiring Die-cutting have 2 layers: one for the graphics and one for the die-cutting lines."
I probably meant to say "die-cutting lines" instead of "bleed lines".